1013280695820 has 60 divisors (see below), whose sum is σ = 3178699076784. Its totient is φ = 270208185120.

The previous prime is 1013280695783. The next prime is 1013280695873. The reversal of 1013280695820 is 285960823101.

1013280695820 is a `hidden beast` number, since 1 + 0 + 1 + 3 + 2 + 8 + 0 + 69 + 582 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 312739336 + ... + 312742575.

Almost surely, 2^{1013280695820} is an apocalyptic number.

1013280695820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1013280695820 is an abundant number, since it is smaller than the sum of its proper divisors (2165418380964).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1013280695820 is a wasteful number, since it uses less digits than its factorization.

1013280695820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 625481932 (or 625481921 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 45.

The spelling of 1013280695820 in words is "one trillion, thirteen billion, two hundred eighty million, six hundred ninety-five thousand, eight hundred twenty".